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Shewanella oneidensis MR-1 nanowires are outer membrane and periplasmic extensions of the extracellular electron transport components
Open accessAbstract
Significance: Bacterial nanowires from Shewanella oneidensis MR-1 were previously shown to be conductive under nonphysiological conditions. Intense debate still surrounds the molecular makeup, identity of the charge carriers, and cellular respiratory impact of bacterial nanowires. In this work, using in vivo fluorescence measurements, immunolabeling, and quantitative gene expression analysis, we demonstrate that S. oneidensis MR-1 nanowires are extensions of the outer membrane and periplasm, rather than pilin-based structures, as previously thought. We also demonstrate that the outer membrane multiheme cytochromes MtrC and OmcA localize to these membrane extensions, directly supporting one of the two models of electron transport through the nanowires; consistent with this, production of bacterial nanowires correlates with an increase in cellular reductase activity.
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Citations
Cited by
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Schwechheimer, C., & Kuehn, M. J. (2015) · Nature Reviews Microbiology · doi:10.1038/nrmicro3525 · Cited by 1,922
Extracellular electron transfer mechanisms between microorganisms and minerals
Shi, L., Dong, H., Reguera, G., Beyenal, H., Lu, A., Liu, J., Yu, H.-Q., & Fredrickson, J. K. (2016) · Nature Reviews Microbiology · doi:10.1038/nrmicro.2016.93 · Cited by 1,915
Self-citationTypes and origins of bacterial membrane vesicles
Toyofuku, M., Nomura, N., & Eberl, L. (2019) · Nature Reviews Microbiology · doi:10.1038/s41579-018-0112-2 · Cited by 1,303
An evolving view on biogeochemical cycling of iron
Kappler, A., Bryce, C., Mansor, M., Lueder, U., Byrne, J. M., & Swanner, E. D. (2021) · Nature Reviews Microbiology · doi:10.1038/s41579-020-00502-7 · Cited by 854
Kracke, F., Vassilev, I., & Krömer, J. O. (2015) · Frontiers in Microbiology · doi:10.3389/fmicb.2015.00575 · Cited by 748
Metadata
- Authors
- Pirbadian, S., Barchinger, S. E., Leung, K. M., Byun, H. S., Jangir, Y., Bouhenni, R. A., Reed, S. B., Romine, M. F., Saffarini, D. A., Shi, L., Gorby, Y. A., Golbeck, J. H., & El-Naggar, M. Y.
- Venue
- Proceedings of the National Academy of Sciences
- Published
- 2014-08-20
- Volume
- 111
- Issue
- 35
- Pages
- 12883-12888
- ISSN
- 0027-8424 (ISSN-L)
- 1091-6490
- OpenAlex
- W2124210751
- Cited by
- 663
- References
- 0
- FWCI
- 43.61
- Type
- journal article
- Language
- en
- Open access
- bronze
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- The paper
- Pirbadian, S., Barchinger, S. E., Leung, K. M., Byun, H. S., Jangir, Y., Bouhenni, R. A., Reed, S. B., Romine, M. F., Saffarini, D. A., Shi, L., Gorby, Y. A., Golbeck, J. H., & El-Naggar, M. Y. (2014). Shewanella oneidensis MR-1 nanowires are outer membrane and periplasmic extensions of the extracellular electron transport components. Proceedings of the National Academy of Sciences. https://doi.org/10.1073/pnas.1410551111
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